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Error code reference

Viking Range Error Code 2 flashes (DSI)

DSI control fault.

Viking codesViking range codes

DSI control fault.

First step from the service manual

Cycle power and retry. If fault remains, replace DSI.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 2 flashes (DSI) means on a Viking range

The 2-flash DSI fault on a Viking range indicates a problem within the Direct Spark Ignition control system. DSI is the electronic ignition system responsible for generating and monitoring the spark used to light the burner, as well as verifying that a flame has been established and is being maintained. When the DSI control detects an internal fault or fails to operate within expected parameters, it signals this condition through the 2-flash error code.

The DSI control board manages the entire ignition sequence: it sends voltage to the igniter, monitors the flame sensor (also called the flame rod or sense electrode) for ionization current, and shuts off gas flow if ignition is not confirmed within a set trial period. A fault in this control can stem from internal component failure on the board itself, loss of proper input voltage, wiring issues between the board and its connected components, or a failed sense circuit causing the board to misread flame status.

The first recommended step is to cycle power to the range, which clears any transient electrical conditions that may have triggered a false fault. If the 2-flash code returns after a power cycle, the DSI control board itself is considered faulty and requires replacement. Continuing to operate the appliance with an unresolved DSI fault is not advisable, as the control may fail to properly manage gas flow or confirm burner ignition.

Source: manufacturer service documentation.

Common causes of 2 flashes (DSI)

  1. 01

    Failed DSI control board

    Part replacement

    The DSI control board itself has an internal component failure, which is the most common cause of this fault when a power cycle does not resolve it. The board cannot be repaired and must be replaced as a unit.

  2. 02

    Transient electrical fault or power surge

    Wiring / connection

    A momentary power fluctuation or surge can cause the DSI control to latch a fault condition. Cycling power clears the board's memory and often resolves a one-time occurrence.

  3. 03

    Wiring harness damage or loose connection

    Wiring / connection

    Damaged, corroded, or disconnected wiring between the DSI board and its connected components can cause the board to register a fault. Inspect all connectors at the DSI board for secure seating and signs of heat damage or corrosion.

  4. 04

    Incorrect or lost supply voltage to DSI board

    Wiring / connection

    If the DSI board is not receiving proper line voltage, it may fault immediately. Check that the board is receiving the correct supply voltage at its input terminals.

  5. 05

    Flame sense circuit fault

    Part replacement

    A failed flame rod or heavily contaminated sense electrode can cause abnormal ionization readings that the DSI board interprets as an internal fault. Inspect the flame sense electrode for cracking, heavy buildup, or a broken lead wire.

See the test procedure for each cause

Frequently asked questions about 2 flashes (DSI)

What does 2 flashes (DSI) mean on a Viking range?
The 2-flash DSI code on a Viking range indicates a fault in the Direct Spark Ignition control system. This is the electronic board responsible for managing the ignition sequence, sparking the burner, and confirming that a flame has been established. The fault can be caused by a failed DSI board, a wiring issue, or a transient electrical condition. Cycling power is the recommended first step to determine if the fault is persistent.
Will resetting the range clear the 2-flash DSI error?
Cycling power, by unplugging the range or shutting off its circuit breaker for a minute and then restoring power, can clear the fault if it was caused by a temporary electrical condition. If the 2-flash code returns after the power cycle, the fault is persistent and the DSI control board will need to be replaced. A reset alone will not fix an internally failed board.
Is it safe to use my Viking range when it shows the 2-flash DSI error?
Operating the range with an active DSI fault is not recommended. The DSI control board is responsible for managing gas flow timing and confirming that the burner has properly ignited. A faulted board may not reliably perform these safety functions. The range should not be used until the fault is resolved.
How do I fix the 2-flash DSI fault on my Viking range?
Start by cycling power to the range for at least one minute, then restore power and test. If the 2-flash code reappears, the DSI control board needs to be replaced. Before ordering a board, inspect the wiring harness connected to the DSI board for loose connectors, damaged wires, or corrosion, as a connection issue can sometimes trigger this fault.
How much does it cost to fix a 2-flash DSI error on a Viking range?
If the repair requires replacing the DSI control board, parts and labor costs typically fall in the range of $200 to $500 or more, depending on the specific model and your location. If the fault is resolved by reseating a wiring connection, the cost can be limited to a service call fee. Obtaining a diagnosis from a qualified technician before ordering parts is advisable to confirm the board is the root cause.

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